13-letter words that end in ous
- superstitious — of the nature of, characterized by, or proceeding from superstition: superstitious fears.
- surreptitious — obtained, done, made, etc., by stealth; secret or unauthorized; clandestine: a surreptitious glance.
- tauromorphous — having the form of a bull
- tautochronous — having the character of a tautochrone
- tetradynamous — having four long and two short stamens, as a cruciferous flower.
- tetrapetalous — having four petals.
- tetrastichous — arranged in a spike of four vertical rows, as flowers.
- the conscious — that part of one's mental activity of which one is fully aware at any given time
- toxicophagous — poison-eating
- trachycarpous — having rough-skinned fruit.
- trichopterous — belonging or pertaining to the insect order Trichoptera, comprising the caddisflies.
- tubuliflorous — having the corolla tubular in all the perfect flowers of a head, as certain composite plants.
- ultracautious — extremely or excessively cautious
- umbelliferous — bearing an umbel or umbels.
- un-nutritious — providing nourishment, especially to a high degree; nourishing; healthful: a good, nutritious meal.
- unadventurous — inclined or willing to engage in adventures; enjoying adventures.
- unceremonious — discourteously abrupt; hasty; rude: He made an unceremonious departure in the middle of my speech.
- uncontentious — tending to argument or strife; quarrelsome: a contentious crew.
- undeleterious — injurious to health: deleterious gases.
- unmeritorious — deserving praise, reward, esteem, etc.; praiseworthy: to receive a gift for meritorious service.
- unperspicuous — clearly expressed or presented; lucid.
- unpretentious — not pretentious; modest; without ostentatious display; plain: his unpretentious demeanor; an unpretentious summer resort.
- unspontaneous — coming or resulting from a natural impulse or tendency; without effort or premeditation; natural and unconstrained; unplanned: a spontaneous burst of applause.
- unsuperfluous — not superfluous or excessive; moderate
- ustilagineous — belonging to the Ustilaginales, an order of fungi that cause plant disease
- ventriloquous — of or relating to ventriloquism or a ventriloquist
- xanthochroous — light-skinned and fair-haired
- xiphophyllous — (botany) Having sword-shaped leaves.
- zygodactylous — Also, zygodactylous. (of a bird) having the toes of each foot arranged in pairs, with two toes in front and two behind.